Aboard Mariner, Dirzah holds a position at Ops on the bridge where he monitors system power levels, communications, transporters, and more.

The nickname “Dirzah” was given to him by Captain Gage after deciding his actual name was too difficult to remember. This also happened to be the common name for his mother, so he is not very fond of the nickname although he would never complain to a senior officer. ("A New Threat")

For his first ground mission, Dirzah was assigned to a reconnaissance team led by Sirol. Sirol objected to Dirzah’s presence, believing he was “too green” for such a task. Dirzah performed well and earned Sirol’s respect. ("A New Threat")